Project information
Photoinhibition and photoprotection in lichens under extreme conditions
- Project Identification
- GA522/03/0754
- Project Period
- 1/2003 - 12/2005
- Investor / Pogramme / Project type
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Czech Science Foundation
- Standard Projects
- MU Faculty or unit
- Faculty of Science
- Cooperating Organization
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Palacký University, Olomouc
- Responsible person prof. RNDr. Petr Ilík, Ph.D.
The aim is to enlarge recent knowledge on ecophysiology of lichens under extreme conditions, mainly at high and low temperature, different thallus hydration and high light. The project is focused on the analysis of photo protective mechanisms activatedin lichen thalli under high light. Those mechanism related to (1) hyphal cortex layer and exclusively to (2) photobiont will be studied separately. Measurements of changes in spectral reflectance with ongoing thalli dessication and determination ofamount and role of pigments and fungi secondary metabolits will be done. Photo protective mechanism related to photobiont will be studied using fluorometric and biochemical methods. We consider application of several fluorometric methods combined withevaluation of the amount of xanthophyll cycle pigments and antioxidants (glutathione reductase, superoxid dismutase) during high light stress induced under laboratory conditions.
Publications
Total number of publications: 28
2005
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Effect of polyols on photosynthetic response of foliose lichens to sub-zero temperature
XVII International Botanical Congress - Abstracts, year: 2005
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Estimation of physiologically-active timein mosses based on in-situ temperature profile data from maritime Antarctica.
PHOTOSYNTHESIS AND STRESS, Biophysical and Biochemical methods in Photosynthesis Research., year: 2005
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Extent of photoinhibition and the rate of recovery from photoinhibition in lichens depends on modus of high light stress.
PHOTOSYNTHESIS AND STRESS: Biophysical and Biochemical Methods in Photosynthesis Research, year: 2005
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Changes in glutathione and xanthophyll cycle pigments in high light-stressed lichens <i>Umbilicaria antarctica<i> and <i>Lasallia pustulata<i>
Journal of Photochemistry and Photobiology B: biology, year: 2005, volume: 79, edition: 3
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Photoprotective mechanisms in foliose lichens have sufficient capacity to cope with a short-term high light stress
XVII International Botanical Congress - Abstracts, year: 2005
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Photosynthesis in Antarctic Lichens in extreme Environments: Plant Stress Physiology Approaches
Investigating Life in Extreme Environments, year: 2005
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Seasonal dynamics of xanthophyll cycle pigments in lichen Xanthoria parietina.
11th Congress of the European Society for Photobiology, September 3-8 - Book of Abstracts, year: 2005
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The effect of high light on zeaxanthine formation in the foliose lichen Lasallia pustulata
Book of abstracts, Photosynthesis and stress, year: 2005
2004
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Fotochemické procesy fotosyntézy a rýchlosť vývinu kyslíku u lišajníkového fotobionta Trebouxia erici
Česko-Slovenská studentská vědecká konference - sborník abstraktů, year: 2004
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High light susceptibility of <i>Xanthoria parietina</i> monitored by chlorophyll fluorescence
10th Days of Plant Physiology, year: 2004